Wash cucumbers thoroughly and slice them evenly into rounds or spears.
Place cucumbers into a clean jar or container with a tight-fitting lid.
Add smashed garlic cloves and fresh dill evenly throughout the cucumbers.
In a bowl, whisk together water, vinegar, salt, and sugar until fully dissolved.
Pour the brine over the cucumbers, making sure they are completely submerged.
Cover the container and refrigerate for at least 4 hours.
For best flavor and crunch, let the garlic-dill-cucumbers rest overnight.
Serve chilled directly from the fridge.